1020330444 has 48 divisors (see below), whose sum is σ = 2725648128. Its totient is φ = 291012288.

The previous prime is 1020330427. The next prime is 1020330481. The reversal of 1020330444 is 4440330201.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1020330444.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38962 + ... + 59654.

It is an arithmetic number, because the mean of its divisors is an integer number (56784336).

Almost surely, 2^1020330444 is an apocalyptic number.

1020330444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1020330444 is an abundant number, since it is smaller than the sum of its proper divisors (1705317684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020330444 is a wasteful number, since it uses less digits than its factorization.

1020330444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21294 (or 21292 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1020330444 is about 31942.6117279098. The cubic root of 1020330444 is about 1006.7314012335.

Adding to 1020330444 its reverse (4440330201), we get a palindrome (5460660645).

The spelling of 1020330444 in words is "one billion, twenty million, three hundred thirty thousand, four hundred forty-four".